Boiler cleaner



Feb. 7, 1933. s, cox ET AL 1,896,575

BOILER CLEANER Filed Feb. 2, 1927 5 Sheets-Sheet 1 INVENTOR. MNUfL F. COA

A TTORNEY.

Feb. 7, 1933. s. F. cox ET AL] 1,896,575

BOILER CLEANER Filed Feb. 2, 1927 3 Sheets-Sheet 2 I y m F U 9 By 22 5;113:012.

IIIHIUIJIWIWH WI/l/I/l/ll/l/Q ATTORNEY.

Feb. 7, 1933. 5 30x ET AL 1 ,896,575

' BOILER CLEANER Filed Feb. 2, 1927 3 Sheets-Sheet 3 26 I N VEN TOR.

12 I SAMUEL am By don/1 H. ROBERTSON A TTORNE Y.

Patented Feb. 7, 1933 UNITED STATES AMUEL I. COX, .OF DETROIT MICHIGAN,

PATENT ogF-ricrl AND JOHN H. ROBERTSON, OF LOCK NO. 4,

PENNSYLVANIA, ASSIGNOB S TO DIAMOND POW'ER SPECIALTY CORPQEATION, OF DETROIT, MICHIGAN, ,L 'CQRPORATION OF MICHIGAN BOILER CLEANER Application filed February This invention relates to boiler cleaners, particularly to that type of cleaner employing the discharge of steam or OthQ/F'fluld to dislodge soot deposits from the tubes and other parts of the boiler.

*1' loop portionof the bearing used to support the blower tube froma tubeof the boiler;

Figures 8 and 3a are views corresponding to FiguresQ and 2a., but showing the clamp portion of thebearing;

Figure 4: is :a view showing an improved method of mounting a :blower "tube bearing on a boiler tube; e l

Figure 5 is a transverse sectional view through aslightly modified form of the construction shown in Figure ,4; V

Figure 6' is a view of the boiler tube as shown in Figure 4:;

Figure 7 is a view similar to Figurel, but showing a modified method of mounting the blower tube bearing on theboilerstube;

Figure8 is a view similar to Figure 3a, but showing a modified construction for the clamp portionof the blower tube bearing;

Figure 9 is a section along line 9I,9 of Figure 8 Figure 10 is a view similarto Figure 5, but showing a modified method of mounting a blower tube bearing on a boilertube;

Figure 11 is a front elevation of gtheconstruction shownin Figure 10;

Figure :12 is aview similar. to Figure 5,'but showing a modified methodof mounting a blower itubebearingon a boiler tube;

Figure :13 isva view similar to Figure 4:, but showing .a still further modified :method 2, 1927. Serial No. 165,4:78,

In Figure 1, the method of mounting the complete boiler cleaner unit is shown. In

opening 2 of boiler wall 1, wall box 3 is provided as a means of supporting the blower head 8 and providing anopening through which passes the boilercleaner blower tube .4. The blower head 8 forms a cleaning fluid connection between the supply pipe 13 and the blower tube 4 and may be of any suitable construction. The detailsof this connecting head form no part of the present invention. In the formshown theblower .tube is connected by coupling 5 to swivel tube 6, which latter is journalled in packing gland 7 mounted in head 8. Gear 9 may be fixed as by set screw 10 to the swivel tube 6. Engag- 111g gear 9 is a small gear 11 mounted to rotate with sheave wheel 12, thus providing a means for rotating, if desired, the blower tube 4. i

This blower tube 4 extends adjacent the boiler tubes 14c, 14a, 14b. The blower tube may be conveniently supported by bearing 15 attached to boiler tube 14a by means of bolt 16. i

Heretofore, diificulty has been-experienced in maintaining these bearings in fixed relatlon to the boiler tube, particularly, where the boiler tubes are mounted at a steep angle from the horizontal as shown in the drawmgs,

The detailed construction of the bearing members themselves is shown in Figures 2, 2a, 3 and 8a. The loop portion of .the bearing which provides an opening to receive a blower tube is shown in Figures 2 and 2a. As can be seen, this loop member is provided with a portion adapted to embrace the boiler tube. Likewise, the clamp portion 156 as shown in Figures 3 and 3a, .is also adapted to embrace the boiler tube. The bearing and loop members are adapted to interlock and to be held in this relation-by means of bolt 16, as shown in Figure 4, passing through the holes 21 and 21a in the loop and clamp membersrespectively. The interlocking provision is shown in Figures 2 and 2a, wherein constitutes a recess cut into the face of the bearing, overlying which recess is a projecting tang 19. The clamp portion is provided with a similar tang member 19a adapted to engage recess :20 in the loop member. Similarly, tang 19 of the loop member is adapted to engage recess 20a of the clamp member.

Referring now to Figure 4:, in which is shown an improved method oi mounting a bearing as has been described on a boiler tube. On boiler tube 14a is provided a projecting pad or lug 18 as shown more clearly in Figure 6. This lug is preferably in the form of a small block which may be welded or otherwise fixed to the boiler tube. The clamp member 15 is provided with a recess 17 adapted to closely engage the projecting pad 18. When the loop member 15 and the clamp member 15* are drawn up by means of bolts 16 and nut 16a, it is obvious that the assembled hearing may be held tightly to the boiler tube and any slippage of the bearing prevented by engagement of the recess in the bearing member, or members, with the projecting pad 18. In the sectional view, Figure 5, a second pad 18a, adapted to be engaged by recess 17a in the loop member, is shown mounted opposite the projecting pad 18, engaged by the recess 17 in the clamp member 15. It is obvious that this projecting pad may be provided to engage a recess in either one or both of the complementary bearing members.

In Figure the projecting pad 18?,- is mounted on boiler tube 1&0, the bearing members 15c and 156 being so mounted thatthe lower edge of 150 rests upon the upper edge of 185. The pad 186 thus prevents the. hearing from slipping down the boiler tube 14c. By this arrangement of the projecting pad member it is not necessary to recess the bearing members as was the case in the modification shown in Figures 4: and 5.

In Figures 8 and 9, a still further modified construction is shown. In these views the clamp member of the bearing 156 is provided with threads, or corrugations, such as shown at 22. It is obvious that either of the two complementary bearing members, or both of them, may be provided with this arrangement. lVhen the bearin g is drawn up ti ghtiy by means of bolt it to embrace the boiler tube, the threads 22 are adapted to grip the tube tightly, thus preventing slipping the bearing.

In Figures 10 and 11, a still further modification is shown. In this modification, set screw 23 is mounted in tapped hole 24.- in the loop member 15g. It is obvious that clamp member 15;, may or may not, be irovided with set screw adapted to engage tapped hole 24a in the clamp member. Thus, one, or both, of the bearing members may be provided with the set screws as aforesaid. 'lhese set screws may be so installed as to contact with boiler tube 14d and when firmly drawn down against said tube will act to prevent the bearing from slipping down the boiler tube.

In Figure 12, the bearing construction is similar to the various forms earlier discussed. Between the bearing members and the boiler tube a layer of cement 25, of suitable composition is provided, which when bolt 16 is drawn up, serves to provide perfect contact between the bearing members 1566 and 15b and the boiler tube 140. The cement when oi. suitable composition, thus acts to seal the bearing members to the boiler tubes thus aiding in preventing slippage. It furthermore provides a means oi securing perfect thermal contact between the bearing members and the boiler tube. In the operation of the boiler the water c rculating through the tubes serves to keep the tube walls cool. By means of this cemented c nsti iction the heat absorbed by the bearing members is readily transmitted to the boiler tube where it is conducted away in the water inside of this tube. Thus, the cemented construction aids in maintaining the bearing members at a lower temperature which is desirable both in maintaining the physical properties of the bearing members and in resisting their oxidation by the hot gases normally present in a boiler setting.

In Figure 13, a" still further modification is shown. In this instance, the clamp member 15?) is welded to the boiler tube 14f at 26. This welding can be conveniently done either by the electric are or by the usual acetylene torch. Either one, or both of the bearing members may be welded to the boiler tube in the manner described. It is obvious that by this method the bearing members may be firmly attached to the boiler tube, thus lessening the possibility of the bearing slipping on the boiler tube.

In connection with the welded construcion as shown in Figure 13, an advantageous method of employing this construction would be the welding of the clamp member only to the boiler tube. The loop portion, because of its surfaces extending away from the boiler tube to support the blower tube, is subjected to considerably more severe temperature conditions than is the clamp portion. Thus, it is the portion more quickly destroyed and hence requiring more frequent replacement. If the clamp member only, be welded to the boiler tube, it would be possible without disturbing the mounting of this member, to remove and install loop members as required. The interlocking means as described hereinbefore, offer a ready means of carrying out this plan. Thus, one member of the bearing would be permanently welded to the boiler tube, while the other membe' could be readily removed and replaced as desired. By this arrangement, we have provided not only a method of rigidly mounting a bearing on a boiler tube, but

have also provided means whereby the beara ing may be readily maintained in serviceable condition.

From the above it will be noted that the invention provides a bearing for a blower tube and means fixed to a boiler part for pre venting movement of the bearing relative to the boiler part. By the term fixed is meant welded, adhesively cemented, formed either integral or substantially integral, or otherwise joined as by pinning or the like, so as to be positively locked against movement.

The common feature of the several described alternative construction is that the bearing members are firmly attached to the boiler tubes, thus, providing a rigid construction for the support of the cleaner element. For the sake of convenience the invention has been described as being embodied in a bearing for supporting a boiler cleaner within a boiler. It will be apparent, however, that the inventive principles disclosed may be utilized for supporting a cleaner in any similar type of apparatus, and it is to be therefore understood that the term boiler wherever used in the specification or claims is to be construed as meaning a heat transfer apparatus or fluid heater of any character, while the term boiler cleaner is to be construed as meaning a cleaner for any such apparatus.

lVhat we claim as our invention is: 1. The combination with a boiler provided with heating surfaces, a portion of said heati ing surfaces projecting from the normal plane thereof, of a blower tube extending adjacent the heating surfaces of theboiler, means to support said blower tube, said supporting means engaging the projecting portion of said heating surface, and said projecting portion of the heating surface being so arranged as to co-act with said supporting means to limit movement thereof in any direction relative to said heating surface.

2. The combination with a boiler provided with heating surfaces, a portion of said heating surfaces projecting from the normal plane thereof, of a blower tube extending adjacent the said heating surfaces, means to support said blower tube, said means consisting of a plurality of members, one of said members engaging the projecting portion of said heating surfaces, said projecting portion of the heating surface being so arranged as to co-act with said supporting means to limit movement thereof in any direction relative to the said heating surface.

3. The combination with a boiler provided with heating surfaces, a portion of said heating surfaces projecting from the normal plane thereof, of means to support said blower tube, said means consisting of a plurality of members, one of which members is provided with a recess engaging the projecting portion of said heating surfaces.

4. The combination with a boiler part and a blower tube adjacent the same, of a bracket for supporting the blower tube from the boiler part and means carried by the boiler part for preventing movement of the bracket in any direction relative to the boiler part.

5. The combination with a boiler part and a blower tube adjacent the same,of an apertured bracket supporting. the blower tube from the boiler part andmeans carried by the boiler part engaging in the aperture in the bracket.

6. The combination with a boiler tube and a blower tube adj acentthe same, of a bracket supporting the blower tube from the boiler tube, the said bracket being provided with an aperture, and a lug on the boiler tube engaging in the aperture in the said bracket to prevent movement of the bracket relative to the boiler tube.

7. The combination with a boiler tube and a blower tube adjacent the same, of a bracket for supporting the blower tube from the boiler tube, the said bracket embracing the boiler tube and being provided with apertures at diametrically opposite points, and a pair of lugs on the said boiler tubeengaged in the apertures in the said bracket.

8. The combination with a boiler part and a blower tube adjacent the same, of means to support the blower tube, and means fixed to said boiler part for preventing movement of said first mentioned means in any direction relative to the boiler part.

9. The combination with a boiler part, and a blower tube adjacent the same, of means for supporting said blower tube from said boiler part including a unitary member embracing said blower tube and a second member fixed to said boiler part for preventing movement of said first mentioned member relative to said boiler part.

10. The combination with a boiler part, and a blower'tube adjacent the same, of a loop member for maintaining the blower tube adjacent the boiler part, and means consisting of a member welded to said boiler part for fixing said loop member against movement relative to said boiler part.

11. The combination with a boiler part, a blower tube adjacent the boiler part, and means to support the blower tube, of means fixed to said boiler part for preventing move ment of said first mentioned means in any direction relative to the boiler part, said last mentioned means including a lug welded to the boiler part.

12. In combination, a boiler part, a blower tube adjacent the boiler part, means including a loop member for maintaining said blower tube adjacent the boiler part, and means fixed to said boiler part for preventing movement of said loop member in any direction relative to said boiler part.

13. In combination with a boiler part, a

blower tube adjacent said boiler part, and means fixed to said boiler part and so arranged with respect to said blower tube as to limit movement thereof in a plurality of directions away from said boiler part.

14. In a boiler cleaner, the combination with a blower tube extending adjacent the heating surfaces of the boiler, of means adapted to support said blower tube, said means consisting of a plurality of members, one of said members being welded to a portion of said heating surfaces.

15. In combination, a boiler part, a blower tube adjacent said boiler part, and a bracket having an opening for receiving said blower tube and having a portion welded to said boiler part, the arrangement being such that said bracket is limited against movement in all directions relative to said boiler part.

16. In combination, a boiler part, a blower tube adjacent said boiler part, and a bracket formed of separable sections, one of said sections being welded to said boiler part and the other of said sections being engageable with said blower tube for supporting the latter.

17. In combination, a boiler part, a blower tube adjacent said boiler part, a member welded to said boiler part, a second member having an opening for receiving said blower tube, and means for detachably securing said second member to said first mentioned member.

18. In combination, a boiler tube, a blower tube, and a bracket for supporting said blower tube from said boiler tube, said bracket including a clamp section welded to said boiler tube and a bearing section engageable with said blower tube and detachably connected to said clamp section.

19. In combination, a boiler tube, a blower tube, a bearing member for said blower tube having a portion shaped to embrace said boiler tube, a clamp member having a portion shaped to embrace said boiler tube and welded thereto, and means for detachably securing said bearing member to said clamp member.

20. The combination with a boiler part and a blower tube adjacent the same, of means for supporting the blower tube from the boiler part including a member having a portion engaging said blower tube and a second member fixed to said boiler part, andmeans detachably connecting said members.

21. The combination with a boiler part and a blower tube adjacent the same, of means for supporting the blower tube from the boilor part including a member having a portion embracing said blower tube, a second member fixed to said boiler part, and means detachably connecting said first mentioned member to said second mentioned member.

22. The combination with a boiler part and a blower tube adjacent the same, of a member welded to said boiler part, a second member having a portion embracing said blower tube to support the same, and means for securing said first mentioned member to said second mentioned member.

23. In a boiler cleaner, the combination with a blower tube extending adjacent the heating surfaces of the boiler, of means adapted to support said blower tube, said means including a plurality of members, one of said members Lcing fixed to a portion of said heating surfaces.

24 In combination, a boiler part, a blower tube adjacent boiler part, and a bracket formed of separable sections, one of said sections being fixed to said boiler part, and the other of said sections being engageable with said blower tube for supporting the latter.

The combination with a boiler part having a portion substantially integral therewith and projecting from the iormal plane thereof, of a blower tube adjacent said boiler part, and means for supporting said blower tube from the boiler part, said means having a portion engaging the blower tube, and means for -.etarhably connecting said first means to the projecting portion of said boiler part.

26. In combination, a boiler part having an aperturcd projection substantially int-egral therewith, a blower tube adjacent the boiler part, and means for supporting the blower tube from the boiler part including a member having a portion engaging said blower tube, and means engageable with said member and in the aperture of said projection.

27. In a boiler cleaner, the combination with a. blower tube extending adjacent the heating surfaces of the boiler, of means adapted to support said blower tube, said means being cemented to a portion of said heating surfaces so as to be held against movement in all directions with respect thereto.

28. In a boiler cleaner, the combination with a blower tube extending adjacent the heating surfaces of the boil-er, of means adapted to support said blower tube, said means being fixed to and in thermal contact with a portion of said heating surfaces so as to be held against movement in all directions with respect thereto.

29. In a boiler cleaner, the combination with a blower tube extending adjacent the heating surfaces of the boiler, of means adapted to support said blower tube, said means being fixed to a portion of said heating surfaces by a layer of heat conducting cement.

30. The combination with a boiler part and a blower tube adjacent the same, of a bracket for supporting said blower tube from said boiler part, said bracket being fixed to said boiler part and in thermal contact with the same so as to be held against movement in all directions with respect to the boiler part.

31. In combination, a boiler part, a blower tube, and means for supporting said blower tube from said boiler part, said means including a member fixed to said boiler part by a layer of a heat conducting substance.

32. In combination, a boiler part, a blower tube, a bracket for supporting said blower 1 tube from said boiler part, and means fixing said bracket to said boiler part so as to hold said bracket against movement in all directions with respect to the boiler part and providing for the conduction of heat from the bracket to the boiler part.

33. In combination, aboiler part, a blower tube, a bracket for supporting said blower tube from'said boiler part, and a layer of an adhesive heat conducting substance arranged between said bracket and said boiler part for fixing the former to thelatter.

34. In combination, a boiler part, a blower tube, and a bracket cemented to said boiler part and having an opening for receiving said blower tube.

35. In combination, a boiler tube, a blower tube, a bracket having a portion embracing said boiler tube and having a second portion formed with an opening for receiving said blower tube, and means placing said bracket in thermal contact with said boiler tube and fixing the bracket to the boiler tube.

36. In combination, a boiler tube, a blower tube, a bracket having a portion embracing said boiler tube and a second portion engaging said blower tube, and a layer of an adhesive heat conducting cement arranged between said boiler tube and said bracket for fixing the latter to the former and for establishing thermal contact between the same.

37. The combination with a boiler part and a blower tube adjacent said boiler part, of 'a member fixed to said boiler part and having an opening for receiving said blower tube.

38. The combination with a boiler part and a blower tube adjacent said boiler part, of means for supporting said blower tube from said boiler part including a plurality of members fixed to said boiler part, one of said members being provided with an opening for receiving said blower tube.

In testimony whereof I affix my signature.

JOHN H. ROBERTSON.

In testimony whereof I aflix my signature.

SAMUEL F. COX. 

